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<?php

$my_string = "Hello Bob. My name is: ";
$my_number = 4;
$my_letter = 'a';
$my_double = 125.36;
echo $my_string;
echo $my_number;
echo $my_letter;
echo $my_double;
//bolean
if (TRUE)
   print("This will always print<br>");
else
   print("This will never print<br>");
   
/*
Each of the following variables has the truth value embedded in its name when it is used in a Boolean context.
*/   
$true_num = 3 + 0.14159;
$true_str = "Tried and true"
$true_array[49] = "An array element";
$false_array = array();
$false_null = NULL;
$false_num = 999 - 999;
$false_str = "";
/*null 
The special constant NULL is capitalized by convention, but actually it is case insensitive; you could just as well have typed:
*/
$my_var = NULL;
?>



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